Disclosure Of Sustainability-Related Financial Information
| Concept | 
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                                
                                    
                                        As at 2024-03-31  | 
                            
                        
|---|---|---|---|---|---|
| Disclosure of Sustainability-related Financial Information | |||||
| Description of metrics related to policy on development of human resources and internal environment, and targets and performance using such metrics | |||||
| Metrics | 
                                        
                                             
                                                男性育休取得率
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                多様性人財数(注)1
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                役席者に占める女性割合(注)2
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                男女の平均勤続年数の差
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                エンゲージメント指数(注)3
                                                
                                             
                                        
                                     | 
                                
                            
| Metrics unit | 
                                        
                                             
                                                %
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                人
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                %
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                年
                                                
                                             
                                        
                                     | 
                                
                                    — | 
| Target period | 
                                        
                                             
                                                2025年3月まで
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2027年3月まで
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2026年4月
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2025年3月末まで
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                2027年3月まで
                                                
                                             
                                        
                                     | 
                                
                            
| Targets | 
                                        
                                             
                                                100
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                100
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                20
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                7
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                8.0
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Performance | 
                                        
                                             
                                                69.2
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                53
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                15.5
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                6.23
                                                
                                                    
                                                        xbrli:pure
                                                    
                                                
                                             
                                        
                                     |